tbuckley/cabot-search huggingface dataset:
Abstract P1-10-18: Impact of Adjuvant Chemoradiation on cardiopulmonary function and Quality of Life in Breast Cancer
Authors: AKANKSHA ANUP, Tabassum Wadasadawala, CARLTON JOHNNY, RAJIV SARIN, RIMA PATHAK, REVATHY KRISHNAMURTHY, Sudeep Gupta, VANI PARMAR, Jaya Ghosh, JYOTI BAJPAI, SEEMA GULIA
Journal: Cancer Research (2023)

Abstract Aims and Objectives – To evaluate the safety of adjuvant chemo-radiation (CTRT) for breast cancer. We report the cardio-pulmonary safety and quality of life outcome of this regimen. Methods – Stage II-III invasive breast cancer patients planned for adjuvant taxane-based chemotherapy and adjuvant radiotherapy (RT) between April 2019 to December 2020 were eligible irrespective of prior neo-adjuvant therapy. Patients received standard 3D conformal radiotherapy (40 Gy in 15 fractions over 3 weeks ± boost for breast conservation) along with the third cycle of adjuvant taxanes in a 3- weekly schedule or the eighth cycle in a weekly schedule. Troponin T, echo cardiography and pulmonary function test were done pre-RT and repeated at 6 months from RT conclusion while quality of life was evaluated pre-RT, at RT conclusion and after 6 months using EORTC QLQ C30 and BR23. Results – Sixty patients were analysed. The median ejection fraction pre and post CTRT was 60% (p=0.177). The median value of Troponin T at baseline was 37 which decreased to 20 post CTRT (p=0.009). Of the 54 patients who underwent the PFT, the functional vital capacity (FCV) was 2.29 litres at baseline which was 2.2 litres post CTRT (p=0.375). No significant difference was seen for forced expiratory volume (FEV) at 1 second (1.86 vs. 1.82: p=0.365), FEV1/FVC (81.5 vs. 81.43; p=0.9) and diffusing capacity for carbon monoxide (DLCO) (88.3 vs. 87.6; p=0.62) at baseline and post CTRT respectively. There was a significant improvement in QOL scores for nausea, vomiting, pain, constipation, loss of appetite and hair loss post RT 6 months. Conclusion- Patients treated with taxane-based adjuvant CTRT had stable cardio-pulmonary profile at 6 months compared to pre-RT. Quality of life scores improved after treatment for most of the domains compared to the pre-RT scores. Table 1. Calculated scores of EORTC QLQ-C30 and BR23 scales for breast cancer patients at baseline, post CTRT and at first follow up of six months. Citation Format: AKANKSHA ANUP, Tabassum Wadasadawala, CARLTON JOHNNY, RAJIV SARIN, RIMA PATHAK, REVATHY KRISHNAMURTHY, Sudeep Gupta, VANI PARMAR, Jaya Ghosh, JYOTI BAJPAI, SEEMA GULIA. Impact of Adjuvant Chemoradiation on cardiopulmonary function and Quality of Life in Breast Cancer [abstract]. In: Proceedings of the 2022 San Antonio Breast Cancer Symposium; 2022 Dec 6-10; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2023;83(5 Suppl):Abstract nr P1-10-18.
Abstract P3-05-56: The clinical impact of preoperatively needle-aspiration biopsy for axillary lymph nodes in T1-T2 breast cancer patients with axillary lymph node metastasis
Authors: Jee Hyun Ahn, Suk Jun Lee, Jieon Go, Hyung Seok Park, Jee Ye Kim, Seung Il Kim, Byeong Woo Park, Seho Park
Journal: Cancer Research (2023)

Abstract Introduction: More than half of the results of axillary lymph node dissection followed by metastasis in sentinel lymph node(SLN) biopsy are negative. For deescalating axillary surgery, it is necessary to predict the non-SLN metastasis state, where metastasis was confirmed in the SLN biopsy. Method: Breast cancer patients with T1 and T2 stage were retrospectively reviewed from January 2008 to December 2016. A total of 818 patients underwent surgery as the primary treatment and the result of SLN biopsy was positive for metastasis. Patients who skipped SLN biopsy procedure and were proven metastatic axillary lymph nodes by needle-aspiration biopsy (NAB) were excluded. SLN was defined as lymph nodes detected by the dual method with hot-uptake by radioisotope and dyed by blue dye, or lymph nodes with palpable or suspected metastatic findings during SLN biopsy. Clinicopathological factors including and extra-nodal invasiveness were analyzed. Result: The median follow-up period was 73 months. Non-SLN metastasis was significantly seen in patients with older than 50 years, positive node metastases by preoperative NAB, high T stage, and extra-nodal invasion. In subgroup analysis, patients who underwent total mastectomy had the similar patterns of the increased risk of having non-SLN. Poor overall survival was observed in the patients with the presence of non-SLN metastasis. Conclusion: We confirmed predictive factors with a high probability of non-SLN metastasis. Axillary lymph node dissection cannot be overlooked in the patients proven the metastatic result of preoperative NAB. Citation Format: Jee Hyun Ahn, Suk Jun Lee, Jieon Go, Hyung Seok Park, Jee Ye Kim, Seung Il Kim, Byeong Woo Park, Seho Park. The clinical impact of preoperatively needle-aspiration biopsy for axillary lymph nodes in T1-T2 breast cancer patients with axillary lymph node metastasis [abstract]. In: Proceedings of the 2022 San Antonio Breast Cancer Symposium; 2022 Dec 6-10; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2023;83(5 Suppl):Abstract nr P3-05-56.
Abstract P5-02-34: Single-cell Analysis of KN026 in Combination with KN046 in Treating Patients with Advanced HER2-positive Breast Cancer
Authors: Jieqiong Liu, Jianyou Liao, Zhenluan Tian, Jien Wang, Chuangui Song
Journal: Cancer Research (2023)

Abstract Background: KN026 is a novel bispecific antibody that simultaneously binds to two distinct HER2 epitopes (two different HER2 epitopes shared by trastuzumab and pertuzumab). KN046 is a novel bispecific antibody that blocks both PD-L1 interaction with PD-1/CD80 and CTLA-4 interaction with CD80/CD86. Our on-going multi-centered phase II trial (NCT04521179) demonstrated that in advanced HER2-positive breast cancer (HER2+ BC) patients, who have progressed after prior anti-HER2 combinational therapies, the objective response rate (ORR) of this chemo-free therapy of KN026 in combination of KN046 was about 50.0% (SABCS 2021 poster P5-16-04). To explore the underlying mechanism of this regimen, we collected tumor specimens from patients before and after receiving this combinational treatment for single-cell analysis to provide an in-depth description of the tumor immune microenvironment and its correlation with treatment response. Methods: Paired tumor specimens before and after treatment of patients enrolled in the trial were collected for single-cell transcriptome and TCR sequencing. In addition, to reveal the immune cell characteristics of anti-HER2 resistant patients, we compared our data with previously reported single-cell analysis of treatment-naïve HER2+ BC. Results: We obtained 30 specimens from 17 patients, including 17 of pre-treatment and 13 of post-treatment. TCR expansion did not correlate with clinical efficacy. In-depth analysis of subpopulations revealed that compared to treatment-naive HER2+ BC, these enrolled prior anti-HER2-resistant patients had an additional population of T cells subpopulation characterized by CD4-low and CD8-low in their baseline tumor tissues, and the proportion of this subpopulation was significantly decreased after KN046 plus KN026 treatment in responding patients. Moreover, we found that patients with baseline CD8+ T/naïve T &amp;gt;1 tended to benefit more from this regimen. Conclusion: We identified a subpopulation of CD4-low and CD8-low T cells that may be associated with anti-HER2 resistance. And decreased of this subpopulation of T cells was associated with better ORR of KN046 in combination with KN026 treatment in heavily pretreated advanced HER2+ BC. Baseline CD8+ T/naïve T ratio in tumor is expected to be a predictor of ORR as well. Citation Format: Jieqiong Liu, Jianyou Liao, Zhenluan Tian, Jien Wang, Chuangui Song. Single-cell Analysis of KN026 in Combination with KN046 in Treating Patients with Advanced HER2-positive Breast Cancer [abstract]. In: Proceedings of the 2022 San Antonio Breast Cancer Symposium; 2022 Dec 6-10; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2023;83(5 Suppl):Abstract nr P5-02-34.
Abstract P4-06-08: HER2-protein expression is a predictive marker for treatment response in patients with HER2-positive breast cancer who received neoadjuvant chemotherapy with dual HER2-blockade
Authors: Soong June Bae, Ji Soo Jang, Yoonwon Kook, Seung Ho Baek, Jee Hung Kim, Sung Gwe Ahn, Joon Jeong
Journal: Cancer Research (2023)

Abstract Background In HER2-positive breast cancer, pathologic complete response (pCR) has been known to be a surrogate marker for favorable prognosis after neoadjuvant chemotherapy. We aimed to identify the clinico-pathologic factors related to pCR in patients with HER2-positive breast cancer treated with neoadjuvant dual HER2-targeted therapy. Methods Two-hundred ninty-five patients with HER2-positive breast cancer who received neoadjuvant chemotherapy with docetaxel, carboplatin, trastuzumab, and pertuzumab (TCHP) were included in this retrospective analysis. We assessed the association between age, clinical T, N stage, pathologic factors such as histologic grade, hormone receptor (HR), tumor-infiltrating lymphocytes, the membranous expression of HER2 protein evaluated by immunohistochemistry (IHC) and pCR. The fluorescent in situ hybridization (FISH) was performed in a tumor with HER2 score of 2+. Results Of the 295 patients, 195 (66.1%) achieved pCR (ypT0/is and ypN0). Besides, 240 (81.4%) patients were HER2 score of 3+, and 55 (18.6%) patients were HER2 score of 2+. The pCR was frequently observed in patients with HER2 score of 3+ (64 of 176 [73.3%]) than in those with HER2 score of 2+ (19 of 55 [34.5%]), regardless of HR status. After adjusting other clinicopathologic factors, the high HER2 protein expression was only an independent factor for pCR (adjusted OR 3.85, 95% CI, 1.66-8.91, p=0.002). Conclusions Our results suggest that high expression of HER2 protein assessed by IHC is important in predicting neoadjuvant TCHP response in HER2-positive breast cancer. Citation Format: Soong June Bae, Ji Soo Jang, Yoonwon Kook, Seung Ho Baek, Jee Hung Kim, Sung Gwe Ahn, Joon Jeong. HER2-protein expression is a predictive marker for treatment response in patients with HER2-positive breast cancer who received neoadjuvant chemotherapy with dual HER2-blockade [abstract]. In: Proceedings of the 2022 San Antonio Breast Cancer Symposium; 2022 Dec 6-10; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2023;83(5 Suppl):Abstract nr P4-06-08.
Abstract P5-09-03: Real World Data on Neoadjuvant Endocrine Treatment and Ki67 Assessment in ER+/HER2- Breast Cancer. Results from a Single-Institution Prospective Cohort Study
Authors: Covadonga Marti, Laura Frias, Adolfo Loayza, Elisa Moreno, Marcos Meléndez, Jose Ignacio Sanchez-Mendez
Journal: Cancer Research (2023)

Abstract Purpose: Neoadjuvant endocrine treatment (NET) has become a useful tool for the downstaging of luminal-like breast cancers in postmenopausal patients. It enables us to increase breast conserving surgery (BCS) rates and provides an opportunity for assessing in vivo NET effectiveness and studying any biological changes that may act as valid biomarkers. The purpose of this study was to evaluate the effectiveness of NET as well as to assess the role of Ki67 proliferation rate changes as an indicator of endocrine responsiveness. Methods: From June 2016 to January 2022, a single-institution cohort of patients treated with NET and further surgery was evaluated. In patients with Ki67≥10%, a second core biopsy was performed after four weeks. Information regarding histopathological and clinical changes, as well as surgical management, was gathered. Results: A total of 168 estrogen receptor positive (ER+)/HER2 negative patients were included. The median age at diagnosis was 69.5 years old (IQR: 16.0). The median treatment duration was 5.0 months (IQR: 4.0). Median maximum size in the surgical sample was 44.0% smaller than pretreatment size measured by ultrasound (p&amp;lt;.0001), showing an inverse linear relationship with treatment duration. Median pretreatment Ki67 expression was 20.0% (IQR: 18.0) and was reduced to 5.0% (IQR: 8.0) after four weeks, and to 2.0% (IQR: 7.25) in the surgical sample (p&amp;lt; 0.0001). Other significant downgrading changes were observed with respect to tumor grade (p&amp;lt; 0.0001) and progesterone receptor (PR) expression (p&amp;lt; 0.0001). BCS was performed on 145 patients (86.3%). One case of pathological complete response was recorded. A larger Ki67 fold-change after four weeks was significantly related to a PEPI score of 0 (p&amp;lt; 0.002). No differences were observed between luminal A- and B-like tumors with regard to fold-change and PEPI score. No treatment abandonment was produced during the study. Conclusions: In our cohort, NET has proven effective for tumor size and Ki67 downstaging. This results in a higher rate of conservative surgery, aids in therapeutic decision-making, provides prognostic information, and constitutes a safe and well-tolerated approach Biological changes after NET Patient and tumor characteristics Citation Format: Covadonga Marti, Laura Frias, Adolfo Loayza, Elisa Moreno, Marcos Meléndez, Jose Ignacio Sanchez-Mendez. Real World Data on Neoadjuvant Endocrine Treatment and Ki67 Assessment in ER+/HER2- Breast Cancer. Results from a Single-Institution Prospective Cohort Study [abstract]. In: Proceedings of the 2022 San Antonio Breast Cancer Symposium; 2022 Dec 6-10; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2023;83(5 Suppl):Abstract nr P5-09-03.
Abstract P4-07-11: Disparities in the uptake of telemedicine and implications for clinical trial enrollment in breast cancer patients
Authors: Camille Hardy Abeloos, Julie Xiao, Cheongeun Oh, Olivier Maisonet, Naamit Gerber
Journal: Cancer Research (2023)

Abstract Purpose/Objectives: Since the COVID-19 pandemic, telemedicine has become an attractive alternative to office visits in routine radiation oncology practice. The purpose of this study was to identify factors associated with patient preference for an initial consult telemedicine visit and correlation with clinical trial enrollment. Materials/Methods: We evaluated breast cancer patients seen during the open enrollment of a prospective randomized controlled non inferiority trial evaluating radiation fibrosis with five versus three fractions from 07/13/2020 to 05/13/2021. Univariate and multivariate logistic regression models were used to identify factors associated with virtual vs in-person initial consultation and enrolled vs not enrolled patients. All statistical tests were two-sided and the null hypothesis was rejected for p&amp;lt; 0.05. Results: We identified 476 patient consultations with 259 office visits and 217 telemedicine visits. On multivariate analysis, increased age, unemployment, chemotherapy receipt and radiation at NYU were associated with decreased usage of telemedicine for consultation visit. Out of 217 patients who underwent a telemedicine initial consultation, 10% were eligible to enroll on the trial and of those eligible, 76% enrolled. Out of 259 patients who underwent office visit initial consultation, 14% were eligible to enroll on the trial and of those eligible, 53% enrolled. Among eligible patients, there was no statistically significant difference in clinical trial enrollment between telemedicine and office visits. There was no statistically significant difference in patient characteristics between enrolled vs not enrolled patients. Conclusion: Though patient and disease characteristics remained similar between patients undergoing telemedicine and office visits consultations, increased age, unemployment and receipt of chemotherapy were associated with lower usage of telemedicine. Those who underwent in person initial consultation were also more likely to subsequently receive their radiation at our clinic. Further studies are needed to better define underlying reasons for patient selection and impact on care and trial enrollment in order to ensure equal access and benefit from telemedicine, especially in already vulnerable patient populations. Citation Format: Camille Hardy Abeloos, Julie Xiao, Cheongeun Oh, Olivier Maisonet, Naamit Gerber. Disparities in the uptake of telemedicine and implications for clinical trial enrollment in breast cancer patients [abstract]. In: Proceedings of the 2022 San Antonio Breast Cancer Symposium; 2022 Dec 6-10; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2023;83(5 Suppl):Abstract nr P4-07-11.
Abstract P2-11-01: Secondary endocrine resistance and high Ki-67 labeling index (≥20%) in patients with low genomic risk identified by 21-gene recurrence score
Authors: Janghee Lee, Hakyoung Kim, Soong June Bae, Jong Won Lee, Byung Ho Son, Sei Hyun Ahn, Joon Jeong, Sae Byul Lee, Sung Gwe Ahn
Journal: Cancer Research (2023)

Abstract Introduction: Although breast cancer with high Ki-67 index are likely to have high genomic risk, some of these might have low genomic risk. In ER+HER2- breast cancer patients with low genomic risk identified by the 21-gene assay, we addressed a clinical significance of Ki-67 index in terms of recurrence-free survival (RFS). Methods: We retrospectively identified 2,295 patients with ER+HER2- breast cancer who underwent the 21-gene assay (Oncotype DX®). High Ki-67 LI was defined as 20% or greater, and low genomic risk was defined by recurrence score (RS) from the assay (&amp;lt; 26). Recurrence after 3 year was regarded as secondary endocrine resistance, which is defined as recurrence while on 2 years of adjuvant endocrine treatment. Results: In all patients, Ki67 index assigned 870 (38%) as the high and 1,425 (62%) as the low groups. Thirty percent (263/870) of the high Ki67 index had high genomic risk, whereas 84/1425 (6%) of the low Ki67 did. Among the patients with low genomic risk who did not receive chemotherapy (n=1,807), high Ki67 index was an independent poor risk factor for recurrence. Furthermore, recurrence after 3 years differed significantly according to Ki-67 index (P=0.003), whereas recurrence within 3 years did not differ (P=0.900). Multivariable analysis demonstrated high Ki67 index as a risk factor for recurrence after 3 years (hazard ratio 3.12; 95% confidence interval, 1.28–7.66). Conclusions: In ER+HER2- breast cancer with low genomic risk identified by 21-gene RS, high Ki67 index is associated with secondary endocrine resistance. Novel approach with CDK4/6 inhibitors is demanded to overcome secondary endocrine resistance in tumors with high Ki67/low genomic profile. Citation Format: Janghee Lee, Hakyoung Kim, Soong June Bae, Jong Won Lee, Byung Ho Son, Sei Hyun Ahn, Joon Jeong, Sae Byul Lee, Sung Gwe Ahn. Secondary endocrine resistance and high Ki-67 labeling index (≥20%) in patients with low genomic risk identified by 21-gene recurrence score [abstract]. In: Proceedings of the 2022 San Antonio Breast Cancer Symposium; 2022 Dec 6-10; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2023;83(5 Suppl):Abstract nr P2-11-01.
Abstract P3-04-06: Artificial intelligence-based triaging of breast cancer screening mammograms and radiologist workload reduction: a systematic review and meta-analysis
Authors: Debora Xavier, Isabele A. Miyawaki, Carlos Alberto Campello Jorge, Matheus Jose Barbosa Moreira, Bruno M. Carvalho, Felipe Batalini
Journal: Cancer Research (2023)

Abstract Introduction: Deep learning (DL) has shown promising results for mammographic breast cancer diagnosis. However, the impact of artificial intelligence (AI) in the screening process have not yet been fully addressed in terms of workload reduction, which has potential to decrease healthcare disparities. Radiologists are tasked with overwhelming volumes of screening mammograms, particularly in medically underserved areas. Therefore, when applied to workflow improvement, AI might be a tool to reduce healthcare disparities. The purpose of this systematic review and meta-analysis was to assess if AI-based triaging of breast cancer screening mammograms could reduce the radiologist’s workload with non-inferior sensitivity. Methods: PubMed, EMBASE, Cochrane Central and Web of Science databases were systematically searched for studies that evaluated AI algorithms on computer-aided triage of breast cancer screening mammograms. We extracted data from homogenous studies and performed a proportion meta-analysis with random-effects model to verify the radiologist’s workload reduction and the software’s sensitivity. Results: A total of 14 studies were systematically selected. Three studies using the same commercially available DL algorithm were included in the meta-analysis, with 156852 examinations evaluated at the threshold of 8. The radiologist’s workload decreased by 68.3% (95%CI 0.655-0.711, I² = 98.76%, p &amp;lt; 0.001), with a sensitivity of 93.1% (95%CI 0.882-0.979, I² = 83.86%, p = 0.002). Conclusion: Our findings suggest that DL computer-aided triage of breast cancer screening mammograms significantly reduces the radiologist’s workload with high sensitivity. Although AI’s implementation remains complex and heterogeneous, it is a promising tool to optimize healthcare resources with a potential large impact in low resource settings that struggle with workforce shortage. Citation Format: Debora Xavier, Isabele A. Miyawaki, Carlos Alberto Campello Jorge, Matheus Jose Barbosa Moreira, Bruno M. Carvalho, Felipe Batalini. Artificial intelligence-based triaging of breast cancer screening mammograms and radiologist workload reduction: a systematic review and meta-analysis [abstract]. In: Proceedings of the 2022 San Antonio Breast Cancer Symposium; 2022 Dec 6-10; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2023;83(5 Suppl):Abstract nr P3-04-06.